Heather Henson-Ramsey Henson-Ramsey, H., Schneider, A., & Stoskopf, M. K. (2011). A Comparison of Multiple Esterases as Biomarkers of Organophosphate Exposure and Effect in Two Earthworm Species. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 86(4), 373–378. https://doi.org/10.1007/s00128-011-0236-9 Henson-Ramsey, H., Kennedy-Stoskopf, S., Levine, J. F., Taylor, S. K., Shea, D., & Stoskopf, M. K. (2008). Acute toxicity and tissue distributions of malathion in Ambystoma tigrinum. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 55(3), 481–487. https://doi.org/10.1007/s00244-007-9091-4